diff --git a/bacnet-stack/lib/Makefile b/bacnet-stack/lib/Makefile
index f71f8ad8..ce3139fe 100644
--- a/bacnet-stack/lib/Makefile
+++ b/bacnet-stack/lib/Makefile
@@ -94,7 +94,7 @@ HANDLER_SRC = \
 	$(BACNET_HANDLER)/s_ts.c \
 	$(BACNET_HANDLER)/s_whohas.c \
 	$(BACNET_HANDLER)/s_whois.c  \
-	$(BACNET_HANDLER)/s_whoisrt.c  \
+	$(BACNET_HANDLER)/s_router.c  \
 	$(BACNET_HANDLER)/s_wp.c
 
 OBJECT_SRC = \